086 WHUS53 KAPX 271603 SMWAPX LHZ349-362-363-271800- /O.NEW.KAPX.MA.W.0092.260727T1603Z-260727T1800Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Gaylord MI 1203 PM EDT Mon Jul 27 2026 The National Weather Service in Gaylord has issued a * Special Marine Warning for... Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border... Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border... Sturgeon Pt to Alabaster MI... * Until 200 PM EDT. * At 1202 PM EDT, a strong thunderstorms were located near Sturgeon Point and extending offshore into central Lake Huron. This cluster of storms are moving south at 20 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Sturgeon Point, Central Lake Huron Buoy, Harrisville, and Greenbush. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4464 8335 4475 8334 4476 8330 4471 8327 4472 8319 4476 8320 4481 8252 4418 8232 4418 8321 TIME...MOT...LOC 1602Z 337DEG 21KT 4469 8317 HAIL...<.75IN WIND...>34KTS $$ msb 671 WHUS53 KLOT 271616 SMWLOT LMZ742>745-779-271815- /O.NEW.KLOT.MA.W.0058.260727T1616Z-260727T1815Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Chicago/Romeoville 1116 AM CDT Mon Jul 27 2026 The National Weather Service in Chicago has issued a * Special Marine Warning for... Nearshore Waters from Northerly Island to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... * Until 115 PM CDT. * At 1115 AM CDT, severe thunderstorms stretched from Carpentersville to Wheaton, and were moving east at around 25 knots. They will reach the Lake Michigan shoreline in approximately 1 hour. HAZARD...Wind gusts 34 knots or greater and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * Locations impacted include... Calumet Harbor, Michigan City, Indiana Harbor, 31st Street Harbor, Burns Harbor, Marina Shores at Dune Harbor, Burnham Harbor, 59th Street Marina, Hammond Marina, and Jackson Park Harbor. Move to safe harbor until hazardous weather passes. LAT...LON 4165 8710 4165 8714 4163 8716 4162 8732 4161 8733 4162 8733 4164 8742 4168 8742 4167 8747 4171 8753 4175 8753 4178 8756 4178 8758 4186 8761 4188 8752 4188 8697 4179 8697 4179 8696 4173 8691 4172 8690 TIME...MOT...LOC 1615Z 291DEG 24KT 4183 8797 HAIL...>.75IN WIND...>34KTS $$ Borchardt 351 WHUS53 KGRR 271632 SMWGRR LMZ847>849-868-870-271800- /O.NEW.KGRR.MA.W.0058.260727T1632Z-260727T1800Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Grand Rapids MI 1232 PM EDT Mon Jul 27 2026 The National Weather Service in Grand Rapids has issued a * Special Marine Warning for... Nearshore Waters from Grand Haven to Manistee MI... Open Waters from Whitehall to Manistee MI... * Until 200 PM EDT. * At 1232 PM EDT, severe thunderstorms were located along a line extending from 24 nm west of Manistee Light to 20 nm west of Big Sable Point Light to 12 nm southeast of Rawley Point Light, moving southeast at 40 knots. HAZARD...Wind gusts to nearly 50 knots and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * Locations impacted include... Ludington Light and Little Sable Point Light. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until these storms pass. Wind gusts to nearly 50 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with these storms. && LAT...LON 4426 8634 4412 8643 4406 8652 4394 8645 4381 8643 4368 8653 4363 8654 4341 8644 4339 8652 4341 8662 4338 8714 4371 8712 4421 8697 4428 8644 TIME...MOT...LOC 1632Z 331DEG 41KT 4430 8690 4415 8697 4410 8727 HAIL...>.75IN WIND...49KTS $$ THOMAS 320 WHUS53 KDTX 271638 SMWDTX LHZ441-462-271800- /O.NEW.KDTX.MA.W.0062.260727T1638Z-260727T1800Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Detroit/Pontiac MI 1238 PM EDT Mon Jul 27 2026 The National Weather Service in Detroit/Pontiac has issued a * Special Marine Warning for... Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border... Port Austin to Harbor Beach MI... * Until 200 PM EDT. * At 1237 PM EDT, a severe thunderstorm was located 14 nm west of Central Lake Huron Buoy, moving southeast at 25 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until this storm passes. Wind gusts to 40 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with this storm. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4418 8226 4385 8218 4384 8270 4399 8280 4404 8291 4400 8300 4405 8301 4405 8300 4418 8300 TIME...MOT...LOC 1637Z 337DEG 25KT 4428 8275 HAIL...>.75IN WIND...40KTS $$ AA 530 WHUS53 KGRB 271639 SMWGRB LMZ542-543-565-567-271815- /O.NEW.KGRB.MA.W.0051.260727T1639Z-260727T1815Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Green Bay WI 1139 AM CDT Mon Jul 27 2026 The National Weather Service in Green Bay has issued a * Special Marine Warning for... Nearshore waters from Sturgeon Bay to Sheboygan... Open waters of Lake Michigan from Sturgeon Bay to Sheboygan... * Until 115 PM CDT. * At 1139 AM CDT, severe thunderstorms were located along a line from near Algoma to 15 NM northeast of Oshkosh, or along a line from 8 NM southwest of Sturgeon Bay Ship Canal Light to 15 NM northeast of Oshkosh, moving southeast at 35 knots. HAZARD...Large hail and wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * The strong thunderstorm will be near... Algoma around 1145 AM CDT. Kewaunee Pierhead Light around 1155 AM CDT. Manitowoc, Two Rivers and Rawley Point Light around 1215 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4410 8769 4415 8758 4416 8758 4417 8762 4416 8754 4419 8752 4432 8755 4448 8752 4448 8753 4477 8732 4472 8676 4413 8701 4383 8709 4389 8773 4410 8767 TIME...MOT...LOC 1639Z 329DEG 34KT 4467 8739 4456 8768 4425 8841 MAX HAIL SIZE...>.75 IN MAX WIND GUST...50 KTS $$ KS 388 WHUS51 KAKQ 271649 SMWAKQ ANZ633-656-271800- /O.NEW.KAKQ.MA.W.0146.260727T1649Z-260727T1800Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Wakefield VA 1249 PM EDT Mon Jul 27 2026 The National Weather Service in Wakefield has issued a * Special Marine Warning for... Coastal Waters from Cape Charles Light to Virginia-North Carolina border out 20 NM... Currituck Sound... * Until 200 PM EDT. * At 1249 PM EDT, a strong thunderstorm was located near Sandbridge, moving southeast at 10 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Virginia Beach Oceanfront, Rudee Inlet, Sandbridge, and Deal Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 3657 7602 3670 7598 3680 7598 3687 7600 3683 7589 3668 7570 3659 7577 3655 7586 3653 7597 TIME...MOT...LOC 1649Z 316DEG 11KT 3676 7602 HAIL...<.75IN WIND...40KTS $$ Zimmerman 502 WHUS53 KGRR 271659 SMWGRR LMZ844>847-872-874-876-878-271900- /O.NEW.KGRR.MA.W.0059.260727T1659Z-260727T1900Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Grand Rapids MI 1259 PM EDT Mon Jul 27 2026 The National Weather Service in Grand Rapids has issued a * Special Marine Warning for... Nearshore and Open Waters from St Joseph to Whitehall MI... * Until 300 PM EDT. * At 1259 PM EDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 26 nm east of Sheboygan to 28 nm east of Winthrop Harbor to 12 nm south of Midway Airport, moving southeast at 55 knots. HAZARD...Waterspouts, wind gusts to nearly 50 knots, and large hail. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * Locations impacted include... South Haven Light, St. Joseph Light, White Lake Pier Heads, Holland Light, The White Lake Pierheads, Grand Haven Light, Muskegon Light, and St. Joseph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until these storms pass. Wind gusts to nearly 50 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with these storms. Thunderstorms can produce sudden waterspouts resulting in locally hazardous seas. Seek safe harbor immediately. && LAT...LON 4213 8656 4212 8696 4338 8714 4341 8644 4308 8625 4277 8621 4248 8625 4228 8634 4211 8649 TIME...MOT...LOC 1659Z 305DEG 57KT 4363 8715 4256 8717 4157 8777 WATERSPOUT...POSSIBLE HAIL...>.75IN WIND...49KTS $$ THOMAS